Island



(No Model.)

J. HOPBpJr.

LATGH No. 408,648. Patented JulyrQ, 1889.

MINIESIS:

.TNVNT N. PETERS. Pnatu-uhognpher. wnmnmon. D. C,

UNITED STATES PATENT OFFICE.N

JOI-IN HOPE, JR., or PROVIDENCE, RHODE ISLAND.

LATCH.`

SPECIFICATION forming part of Letters Patent No. 406,648, dated July 9, 1889.

Application filed July 16, 1888. Serial No. 280,068. (No model.)

To all whom it may concern Be it known that I, JOHN HOPE, J r., of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Combined Door locks and Latches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

The objects of my invention are to provide a door lock and latch that can be attached to the door with the least cutting of the door an d that will strengthen the door, and also to provide a lock that can be used either as a lock or as a latch.

To the above purposes Iny invention consists in the novel combination of the different features, as hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is a side view of part of a door having my improved lock attached thereto. Fig. 2 is a sectional View of my improved lock, the door being shown in dotted lines. Fig. 3 is a top sectional view of my improved lock. Figs. 4, 5, 6, and 7 show varions forms of keys to be used with my improved lock. Fig. 8 is a sectional view of part of the knob, hub, and shaft, and shows another form of key, in which the end of the tric. Fig; 9 is a sectional View of the knob, and shows a key having a hinged portion that can be bent down into the recess formed in the knob, so as to be concealed by the'plate attached to the knob.

In the said drawings like figures of refer-A ence designate corresponding parts throughout.

Referring to the drawings, the lock-frame l0 is U-shaped in section, so as to clasp and protect the edge of the door at the point yof attachment. On the two side wings of the frame 10 are formed the hubs 11 l1, upon which are loosely mounted the two knobs 12 12. These knobs are held in place by reason of the grooves 13 13, cut in the hubs 11 11, and the pins 14 14, so that the knobs may be freely revolved -on the hubs 11 11.

The shafts 15 15 are each provided withg-a disk 16 16, carrying the pins 17 17 at one end,

the disk and pins forming an eccentric. The other end 1S 18 of the shafts 15 15 are each formed square, many-sided, or irregular shaped, a hole 19, of the sameshape, being formed in the end of the key 20, so that the key willfit over the peculiarly-shaped end l18; or, as shown in Figs. 8 and 9,*t-he end of placed in the hole 27, formed in the door, and

the other end abuts against the latch-frame 23 and serves to keep the latch in the normal or outwardlyextended position; or a iat spring, such as is indicated by dotted lines in Fig. 3, may be used for the same purpose.

The knob is formed with ,a square, manysided, or irregularly-shaped hole 28, into which the shank ofthe key 2O fits. This hole 2S may be of the same shape as the hole 19 or extension 22, formed in or on the key 20, or the two may differ;V but in all cases the hole 19 or extension 22 must correspond to the shape of the extension 1S or hole 21, formed on or in the shafts 15 15, and the shank of the key 20 must tit thehole 28 intheknob 12.

In all the figures, except Fig. 9, the key 2O is shown as provided with the head 29, whichcan be grasped by the lingers, and thereby the key may be readily removed from the hole formed in the knob 12.

InFig. 9 t-he key is shown as having a hinged portion 30, which can be bent to one side in the depression formed in the knob 12 and covered yor concealed by the plate 31, which is pivoted to the knob 12 by the rivet 82. The plate 31 may be'attached to the knob in any of the well-known Ways-that is, the plate may be provided with a screw-threaded flange and the sides of the depression maybe screw-threaded toA correspond to the thread out on the flange formed on the plate, or the plate may be hinged to the knob or attached thereto in various ways so as to conceal and IOO prevent the loss of the key, and at the same time act to protect the hole in the knob from dust, &c., when the key is removed therefrom. Y

An important feature in the use of my improved lock is that all the cutting necessary to the attaching of the lock is straight simple work, which can be done by persons of little experience; also the lock adds great strength to the door-at the place Where most needed, as the shape of the lock is such as to clasp and strengthen the door; Whereas in the locks as heretofore constructed, Where the lock was mortised into the frame, the necessary removal of so much of the door-frame greatly reduced the strength thereof. When thel keysare removed, the door is permanently locked and the knobs can be freely turned on the hubs l1 without in any manner affecting the lock. When desired, one key can be left in the knob and the other removed, so that the lock can only be operated from the side of the door carrying the knob in which the key is, While the other knob will simply revolve on the hub Without affecting the lock.

This style of lock i'sespecially adapted to interior doors-such as doors connecting two rooms or on closet-doors-where it is only desirable to lock the door occasionally.

Various modifications may be made in the details of construction Without departingYV from the spirit of my invention. For instance, the disk 16 may be in the shape of a cam and the pin 17 be dispensed with, the cam taking the place of the pin in the` slot 24.

For ordinary use the knobs may be permanently secured to the shafts l5 in any suit-VY able manner and the latch operated from oneYV or both sides of the door as a latch.

Having thus described my invention, I claim as new and desire to secure by Letters Patentnl. A lock the frame of which extends over the inside and outside of the door and across the edge thereof, provided with two independent knobs for'operating the latch, substantially as described.

2. The lock formedV with the U-shaped frame to clasp the door, provided with the hubs having the knobs loosely mounted thereon, and the eccentric for operating the latch provided with shafts constructed to be connected with and disconnected from the knobs, as described.

3. The combination, in a lock, of a knob loosely mounted on the frame, the latch, the eccentric for operatingthelatch, and a key for locking the knob to the eccentric, substantially as and for the purpose herein described.

4. The combination, in a lock, of the knob loosely mounted on the frame of the lock, the shaft provided with alocking end and carrying the eccentric, and the U-shaped latch-frame having the latch attached thereto and operated by the eccentric when the knob is secured Yto the shaft of the eccentric, substantially as described.

5. The combination, in a lock, with the lockframe, of a knob loosely mounted, a shaft connected with the latch-operating device, the latch-frame provided with the latch, and a' key constructed to secure the knob to the latch-shaft, as described.

6. The combination, in a lock, of the frame 10, the hub 11, the knob 12, the shaft l5, the eccentric k16, the latch-frame 23, provided with the latch 25, and the spring 26, substantially as described.

' JOHN HOPE, JR.

lVitnesses:

J. A. MILLER, Jr., M. F. BLIGH. 

